Drill-puller.



M. c. SHEA.

DRILL FULLER ,AP-PLICATION FILED MAR. 2l-,19l9- v 1,326,426. PatentedDec. 30,1919.

E @g 0 WW UNITED STATES PATENT OFFICE.

MICHAEL C. SHEA, OF HANCOCK, MICHIGAN.

DRILL-FULLER.

Application filed March 21, 1919.

f '0 all whom it may concern:

Be it known that 1, MICHAEL C. SHEA, a citieen of the United States,residing at Hancock, in the county of Houghton and State of Michigan,have invented certaln new and useful Improvements in Drill-Pullers; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to drill pullers.

One object of the invention is to provide an improved device for pullingstuck drills or bits from the chucks or sockets that hold them, and forpulling drills, bits, bolts or other fastened rods from a body in whichone-or more of such rods are fastened;

A further object is to provide av device of this character which isapplicable to clamp a drill or rod having both ends stuck or fastened,the device being adapted to engage with the drill or rod without passingover either end of the rod.

Other objects and advantages may become apparent to persons who read thefol lowing details of description in connection with the accompanyingdrawings, in which Figure 1 is an elevation showing my 1mproved pullerin position for pulling a drill from the drill socket.

Fig. 2 is an elevation of my improved puller in position for pulling thedrill from a hole which it has drilled and in which it is stuck.

Fig. 3 is a sectional view taken along the line 33 of Fig. 1.

Fig. 4 is a sectional view taken along the line H of Fig. 1.

Referring to these drawings in detail, in which similar referencecharacters correspond with similar parts throughout the several views,the reference character 5 indicates a drill, 6 indicates a drill chuck,and 7 indicates a rock or other body into which a hole has been drilled,these elements being shownmerely to illustrate the application of thisinvention. My invention comprises broadly a clamp 8, a foundationplate 9and screws 10, each of the latter being operatively engaged with one ofthe two counterpart clamping members of jaws 11, these aws beingprovided with screw-threaded apertures through which the screws 10extend. Each of the jaws 11 is notched at 12,

Specification of Letters Patent.

Patented Dec. 30, 1919.

Serial No. 284,130.

and these complemental notches 12 are of such shape that they fit snuglyagainst the surface of the drill or rod intended to be clamped thereby,as shown in Fig. 3. On each of the jaws or plates 11 is formed aperturedears 13 extending in opposite directions from its notch 12. Screws 14;are engaged with threads in the apertured ears '13 of one of the jaws11, and extend through the apertured ears 13 of the other jaw 11, thesescrews 1 1 being operatable to draw the clamping members or jaws 11toward one another and thereby tightly clamp the drill or rod which isdisposed in the notches 12. It will be seen that the jaws 11 may beseparated by removing the screws 14, and may be passed. laterally of thedrill or rod into clamping position thereon, so that even though one endof a drill be stuck in a drill socket, and its other end is stuck in abody being drilled, the clamp may be secured on icslhe1 drill betweenthe chuck and body being ri led.

The foundation plate 9 is formed with a notch 15 which opens through oneof the lateral edges of the plate, so that the plate may be passedlaterally onto a drill or rod even though both ends thereof be stuck. Atopposite sides of the notch 15, the foundation plate 9 is formed Withcircular depressions 16 which preferably conform to the ends of thescrews 10, so that the latter may be turned in these depressions whenthe plate is in the operative position shown in Figs. 1 and 2. Theadvantages of this foundation plate are, first, it provides a seat forthe screws 10 when the chuck or socket member 6 is too narrow to providesuch a seat, as shown in Fig. 1; second, it provides the depressions 16which may receive oil or other lubricating material which makes thefriction of the screws far less than if their ends were operatingagainst an unlubricated surface and third, it avoids damage to a surfacebeing drilled, by imposing a smooth and solid surface agalnst the bodybeing drilled, instead of causing the screws 10 to bear directly againstthe body being drilled.

In operating this device, the foundation plate 9 is positioned againstthe chuck 6 or the body 7, according to which member the drill is stuckin, and the jaws 11 are placed on opposite sides of the drill in suchposition that. the drill is disposed in the notches 12, while the screws10 are disposed in the depressions l6, whereupon, the screws ll areplaced in the cars 13 and tightened until the drill is tightly clampedby this clamp S; and now, the screws are alternatively or simultaneouslyrotated in the direction for causing the clamp 8 to move away from thefoundation plate 9, and it will be seen that this operation withdrawsventive idea disclosed in the foregoing de-- scription and followingclaims.

WVhat I clalm as my inventlon 1s:-

1. In a pulling device, a pair of clamp,

111g members each formed with apertures through its ends and with awidened middle portion having a notch in one edge, means extendingthrough the apertured ends of said clamping members to cause theirnotched portions to clamp an object to be pulled, a pair of pushingscrews, and a foundation plate against which the ends of the pushingscrews push, said widened middle portions of the clamping members beingformed with screw-threaded apertures in which said pushing screwsoperate.

2. In a pulling device, a pair of clamping members each formed withapertures through its ends and with a widened middle portion having anotch in one edge, screws extending through the apertured ends of saidclamping members to cause their notched portions to clamp an object tobe pulled, a pair of pushing screws, and a foundation plate againstwhich the ends of the pushing screws push, said widened middle portionsof the clamping members being formed with screw-threaded apertures inwhich said pushing screws operate, said foundation plate being formedwith de pressed seats to receive the pushing ends of said pushing screwsand to retain lubrication for the screws, said foundation plate beingformed with, a laterally i opening notch between said depressions andadapted to receive a rod or the like to be pulled.

In testimony whereof I have hereunto set my hand.

MICHAEL G. SHEA.

